Introduction
This manual provides instructions for the proper use and care of your Audio-Technica ATH-M50x Professional Studio Headphones and the included BAL-M50x Bluetooth Adapter. The ATH-M50x headphones are designed for critical audio monitoring, offering exceptional clarity and deep, accurate bass response. The BAL-M50x Bluetooth Adapter converts your wired ATH-M50x headphones into a wireless solution, providing flexibility for various listening environments.
What's in the Box
Verify that all items listed below are present in your package:
- Audio-Technica ATH-M50x Professional Studio Headphones
- East Brooklyn Labs Compatible Bluetooth Adapter (BAL-M50x)
- Detachable Coiled Cable (approx. 1.2m - 3.0m / 3.9' - 9.8')
- Detachable Straight Cable (approx. 3.0m / 9.8')
- Detachable Straight Cable (approx. 1.2m / 3.9')
- 6.3mm (1/4") Screw-on Adapter
- Protective Carrying Pouch
Setup
1. Headphone Adjustment
Adjust the headband for a comfortable and secure fit. The earcups are designed to swivel for single-ear monitoring and fold for compact storage.

Image: Audio-Technica ATH-M50x headphones in their standard, unfolded configuration, ready for use. The detachable cable port is visible at the bottom of the left earcup.

Image: Audio-Technica ATH-M50x headphones folded for compact storage, demonstrating their portability.
2. Wired Connection
- Select the desired detachable cable (coiled, long straight, or short straight).
- Insert the smaller end of the cable into the locking jack on the left earcup of the headphones. Twist to secure the connection.
- Connect the other end of the cable to your audio device. If connecting to a 6.3mm (1/4") jack, screw on the included adapter.

Image: The coiled detachable cable for the ATH-M50x headphones, offering flexibility in length.

Image: The long straight detachable cable for the ATH-M50x headphones, suitable for studio or extended reach applications.

Image: The short straight detachable cable for the ATH-M50x headphones, ideal for portable use.

Image: The protective carrying pouch and the 6.3mm (1/4") screw-on adapter, included with the ATH-M50x headphones.
3. BAL-M50x Bluetooth Adapter Setup
- Charging the Adapter: Before first use, fully charge the BAL-M50x adapter. Connect the adapter to a USB power source using a compatible charging cable. The charging indicator light will change when fully charged.
- Attaching the Adapter: Disconnect any wired cables from your ATH-M50x headphones. Carefully insert the BAL-M50x Bluetooth adapter into the locking jack on the left earcup. Ensure it is securely seated.
- Pairing with a Device:
- With the adapter attached to the headphones, press and hold the power button on the adapter until the indicator light flashes, indicating pairing mode.
- On your audio device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
- Select "BAL-M50x" (or similar name) from the list of found devices.
- Once paired, the indicator light on the adapter will change to a steady light or a slow flash, confirming the connection.
Operating Instructions
1. Wired Use
Once connected via cable, simply play audio from your source device. Adjust volume directly on your source device or amplifier.
2. Wireless Use (with BAL-M50x Adapter)
Ensure the BAL-M50x adapter is charged and paired with your device.
- Power On/Off: Press and hold the power button on the adapter to turn it on or off.
- Volume Control: Use the volume up (+) and volume down (-) buttons on the adapter to adjust playback volume.
- Play/Pause: Press the main button (often the power button or a dedicated multi-function button) once to play or pause audio.
- Track Skip: Press and hold the volume up (+) button to skip to the next track. Press and hold the volume down (-) button to go to the previous track.
- Call Handling:
- Answer/End Call: Press the main button once.
- Reject Call: Press and hold the main button.
- Redial Last Number: Double-click the main button.
Maintenance
1. Cleaning
- Wipe the headphones and adapter with a soft, dry cloth.
- Do not use solvents, alcohol, or abrasive cleaners, as these can damage the surfaces.
- Periodically check ear pads for wear and tear. Replacement ear pads are available from Audio-Technica or authorized dealers.
2. Storage
- When not in use, store the headphones in the provided protective carrying pouch to prevent scratches and dust accumulation.
- Avoid storing in extreme temperatures or high humidity.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound (Wired) | Cable not securely connected; Audio source not playing; Volume too low. | Ensure cable is fully inserted and twisted to lock. Check audio source playback and volume levels. Test with a different cable or audio source. |
| No sound (Wireless) | Adapter not powered on; Not paired; Out of range; Low battery. | Ensure adapter is powered on and charged. Re-pair the adapter with your device. Move closer to the audio source. Charge the adapter. |
| Poor sound quality / Distortion (Wireless) | Interference; Adapter not fully seated; Low battery; Device compatibility. | Move away from other wireless devices. Ensure the BAL-M50x adapter is firmly seated in the headphone jack. Charge the adapter. Try pairing with a different device. |
| Bluetooth adapter battery life is short | Normal wear; Adapter defect. | Ensure adapter is fully charged before use. If battery life remains significantly short after full charge, contact support. |
| Cannot pair Bluetooth adapter | Adapter not in pairing mode; Device Bluetooth off; Previously paired to another device. | Ensure adapter is in pairing mode (flashing light). Turn Bluetooth off and on again on your device. Forget the device from your device's Bluetooth settings and try pairing again. |
Specifications
| Feature | Detail |
|---|---|
| Brand | Audio-Technica |
| Model Number | ATH-M50x+BAL-M50X |
| Ear Placement | Over Ear |
| Form Factor | Over Ear |
| Noise Control | Sound Isolation |
| Audio Driver Type | Dynamic Driver (45 mm large-aperture) |
| Enclosure Material | Aluminum |
| Specific Uses For Product | Professional Audio |
| Compatible Devices | Smartphones, Laptops, Tablets, Smart Speakers, Televisions |
| Connectivity Technology | Bluetooth (Wireless), Wired (3.5mm/6.3mm) |
| Wireless Technology | Bluetooth |
| Item Weight | 10 Ounces (approx. 283 grams) |
| Control Method | Remote (via Bluetooth adapter) |
Warranty Information
The Audio-Technica ATH-M50x Professional Studio Headphones and BAL-M50x Bluetooth Adapter come with a 1 year limited warranty. This warranty covers defects in materials and workmanship under normal use. For specific terms and conditions, or to initiate a warranty claim, please refer to the official Audio-Technica website or contact their customer support.
Support
For further assistance, technical support, or warranty inquiries, please visit the official Audio-Technica website or contact their customer service department. Keep your purchase receipt and product model number (ATH-M50x+BAL-M50X) readily available when seeking support.
Audio-Technica Official Website: www.audio-technica.com





